Modernize codebase by replacing NULL with nullptr

Fixes -Wzero-as-null-pointer-constant warning for binder.

Test: m
Bug: 68236239
Change-Id: I8184bd6aa4ebff1bd8c88dad16886e98df853b03

10 files changed, 24 insertions, 24 deletions

diff --git a/libutils/include/utils/AndroidThreads.h b/libutils/include/utils/AndroidThreads.h
index dab888d5a..a8d785175 100644
--- a/libutils/include/utils/AndroidThreads.h
+++ b/libutils/include/utils/AndroidThreads.h
@@ -106,7 +106,7 @@ inline bool createThreadEtc(thread_func_t entryFunction,
                             const char* threadName = "android:unnamed_thread",
                             int32_t threadPriority = PRIORITY_DEFAULT,
                             size_t threadStackSize = 0,
-                            thread_id_t *threadId = 0)
+                            thread_id_t *threadId = nullptr)
 {
     return androidCreateThreadEtc(entryFunction, userData, threadName,
         threadPriority, threadStackSize, threadId) ? true : false;
diff --git a/libutils/include/utils/CallStack.h b/libutils/include/utils/CallStack.h
index 96221425e..0c1b87522 100644
--- a/libutils/include/utils/CallStack.h
+++ b/libutils/include/utils/CallStack.h
@@ -49,13 +49,13 @@ public:
     // Dump a stack trace to the log using the supplied logtag.
     void log(const char* logtag,
              android_LogPriority priority = ANDROID_LOG_DEBUG,
-             const char* prefix = 0) const;
+             const char* prefix = nullptr) const;
 
     // Dump a stack trace to the specified file descriptor.
-    void dump(int fd, int indent = 0, const char* prefix = 0) const;
+    void dump(int fd, int indent = 0, const char* prefix = nullptr) const;
 
     // Return a string (possibly very long) containing the complete stack trace.
-    String8 toString(const char* prefix = 0) const;
+    String8 toString(const char* prefix = nullptr) const;
 
     // Dump a serialized representation of the stack trace to the specified printer.
     void print(Printer& printer) const;
diff --git a/libutils/include/utils/Looper.h b/libutils/include/utils/Looper.h
index a62e67f5f..4509d75ff 100644
--- a/libutils/include/utils/Looper.h
+++ b/libutils/include/utils/Looper.h
@@ -262,7 +262,7 @@ public:
      */
     int pollOnce(int timeoutMillis, int* outFd, int* outEvents, void** outData);
     inline int pollOnce(int timeoutMillis) {
-        return pollOnce(timeoutMillis, NULL, NULL, NULL);
+        return pollOnce(timeoutMillis, nullptr, nullptr, nullptr);
     }
 
     /**
@@ -272,7 +272,7 @@ public:
      */
     int pollAll(int timeoutMillis, int* outFd, int* outEvents, void** outData);
     inline int pollAll(int timeoutMillis) {
-        return pollAll(timeoutMillis, NULL, NULL, NULL);
+        return pollAll(timeoutMillis, nullptr, nullptr, nullptr);
     }
 
     /**
diff --git a/libutils/include/utils/Mutex.h b/libutils/include/utils/Mutex.h
index 1228df4cd..29c2e8ce1 100644
--- a/libutils/include/utils/Mutex.h
+++ b/libutils/include/utils/Mutex.h
@@ -100,7 +100,7 @@ class CAPABILITY("mutex") Mutex {
 
     Mutex();
     explicit Mutex(const char* name);
-    explicit Mutex(int type, const char* name = NULL);
+    explicit Mutex(int type, const char* name = nullptr);
     ~Mutex();
 
     // lock or unlock the mutex
@@ -160,10 +160,10 @@ class CAPABILITY("mutex") Mutex {
 #if !defined(_WIN32)
 
 inline Mutex::Mutex() {
-    pthread_mutex_init(&mMutex, NULL);
+    pthread_mutex_init(&mMutex, nullptr);
 }
 inline Mutex::Mutex(__attribute__((unused)) const char* name) {
-    pthread_mutex_init(&mMutex, NULL);
+    pthread_mutex_init(&mMutex, nullptr);
 }
 inline Mutex::Mutex(int type, __attribute__((unused)) const char* name) {
     if (type == SHARED) {
@@ -173,7 +173,7 @@ inline Mutex::Mutex(int type, __attribute__((unused)) const char* name) {
         pthread_mutex_init(&mMutex, &attr);
         pthread_mutexattr_destroy(&attr);
     } else {
-        pthread_mutex_init(&mMutex, NULL);
+        pthread_mutex_init(&mMutex, nullptr);
     }
 }
 inline Mutex::~Mutex() {
diff --git a/libutils/include/utils/RWLock.h b/libutils/include/utils/RWLock.h
index 7d43e69f1..64e370e3e 100644
--- a/libutils/include/utils/RWLock.h
+++ b/libutils/include/utils/RWLock.h
@@ -48,7 +48,7 @@ public:
 
                 RWLock();
     explicit    RWLock(const char* name);
-    explicit    RWLock(int type, const char* name = NULL);
+    explicit    RWLock(int type, const char* name = nullptr);
                 ~RWLock();
 
     status_t    readLock();
@@ -82,10 +82,10 @@ private:
 };
 
 inline RWLock::RWLock() {
-    pthread_rwlock_init(&mRWLock, NULL);
+    pthread_rwlock_init(&mRWLock, nullptr);
 }
 inline RWLock::RWLock(__attribute__((unused)) const char* name) {
-    pthread_rwlock_init(&mRWLock, NULL);
+    pthread_rwlock_init(&mRWLock, nullptr);
 }
 inline RWLock::RWLock(int type, __attribute__((unused)) const char* name) {
     if (type == SHARED) {
@@ -95,7 +95,7 @@ inline RWLock::RWLock(int type, __attribute__((unused)) const char* name) {
         pthread_rwlock_init(&mRWLock, &attr);
         pthread_rwlockattr_destroy(&attr);
     } else {
-        pthread_rwlock_init(&mRWLock, NULL);
+        pthread_rwlock_init(&mRWLock, nullptr);
     }
 }
 inline RWLock::~RWLock() {
diff --git a/libutils/include/utils/RefBase.h b/libutils/include/utils/RefBase.h
index e817ee4d6..13b6a2bc9 100644
--- a/libutils/include/utils/RefBase.h
+++ b/libutils/include/utils/RefBase.h
@@ -354,7 +354,7 @@ class wp
 public:
     typedef typename RefBase::weakref_type weakref_type;
 
-    inline wp() : m_ptr(0) { }
+    inline wp() : m_ptr(nullptr) { }
 
     wp(T* other);  // NOLINT(implicit)
     wp(const wp<T>& other);
@@ -505,7 +505,7 @@ template<typename T>
 wp<T>& wp<T>::operator = (T* other)
 {
     weakref_type* newRefs =
-        other ? other->createWeak(this) : 0;
+        other ? other->createWeak(this) : nullptr;
     if (m_ptr) m_refs->decWeak(this);
     m_ptr = other;
     m_refs = newRefs;
@@ -528,7 +528,7 @@ template<typename T>
 wp<T>& wp<T>::operator = (const sp<T>& other)
 {
     weakref_type* newRefs =
-        other != NULL ? other->createWeak(this) : 0;
+        other != nullptr ? other->createWeak(this) : nullptr;
     T* otherPtr(other.m_ptr);
     if (m_ptr) m_refs->decWeak(this);
     m_ptr = otherPtr;
diff --git a/libutils/include/utils/Singleton.h b/libutils/include/utils/Singleton.h
index 2dd5a47e6..44d8ad79c 100644
--- a/libutils/include/utils/Singleton.h
+++ b/libutils/include/utils/Singleton.h
@@ -51,7 +51,7 @@ public:
     static TYPE& getInstance() {
         Mutex::Autolock _l(sLock);
         TYPE* instance = sInstance;
-        if (instance == 0) {
+        if (instance == nullptr) {
             instance = new TYPE();
             sInstance = instance;
         }
@@ -60,7 +60,7 @@ public:
 
     static bool hasInstance() {
         Mutex::Autolock _l(sLock);
-        return sInstance != 0;
+        return sInstance != nullptr;
     }
     
 protected:
@@ -90,7 +90,7 @@ private:
 #define ANDROID_SINGLETON_STATIC_INSTANCE(TYPE)                 \
     template<> ::android::Mutex  \
         (::android::Singleton< TYPE >::sLock)(::android::Mutex::PRIVATE);  \
-    template<> TYPE* ::android::Singleton< TYPE >::sInstance(0);  /* NOLINT */ \
+    template<> TYPE* ::android::Singleton< TYPE >::sInstance(nullptr);  /* NOLINT */ \
     template class ::android::Singleton< TYPE >;
 
 
diff --git a/libutils/include/utils/String8.h b/libutils/include/utils/String8.h
index 94ac32fbb..c8f584e30 100644
--- a/libutils/include/utils/String8.h
+++ b/libutils/include/utils/String8.h
@@ -187,7 +187,7 @@ public:
      * "/tmp" --> "tmp" (remain = "")
      * "bar.c" --> "bar.c" (remain = "")
      */
-    String8 walkPath(String8* outRemains = NULL) const;
+    String8 walkPath(String8* outRemains = nullptr) const;
 
     /*
      * Return the filename extension.  This is the last '.' and any number
diff --git a/libutils/include/utils/StrongPointer.h b/libutils/include/utils/StrongPointer.h
index 9cd278f1f..360fce509 100644
--- a/libutils/include/utils/StrongPointer.h
+++ b/libutils/include/utils/StrongPointer.h
@@ -52,7 +52,7 @@ inline bool operator _op_ (const wp<U>& o) const {              \
 template<typename T>
 class sp {
 public:
-    inline sp() : m_ptr(0) { }
+    inline sp() : m_ptr(nullptr) { }
 
     sp(T* other);  // NOLINT(implicit)
     sp(const sp<T>& other);
@@ -230,7 +230,7 @@ template<typename T>
 void sp<T>::clear() {
     if (m_ptr) {
         m_ptr->decStrong(this);
-        m_ptr = 0;
+        m_ptr = nullptr;
     }
 }
 
diff --git a/libutils/include/utils/VectorImpl.h b/libutils/include/utils/VectorImpl.h
index 55d5d9818..41b9f3310 100644
--- a/libutils/include/utils/VectorImpl.h
+++ b/libutils/include/utils/VectorImpl.h
@@ -157,7 +157,7 @@ protected:
     virtual int             do_compare(const void* lhs, const void* rhs) const = 0;
 
 private:
-            ssize_t         _indexOrderOf(const void* item, size_t* order = 0) const;
+            ssize_t         _indexOrderOf(const void* item, size_t* order = nullptr) const;
 
             // these are made private, because they can't be used on a SortedVector
             // (they don't have an implementation either)